right now to the shocking dash cam video just released. A Texas woman shot to death by police last fall, after a high-speed chase. Her family maintains there was no reason for her to die and filed a lawsuit. This video is disturbing. ABC's Cecilia Vega has the story. Reporter: It was a 20-mile chase across state lines and hit speeds of 100 miles per hour. The whole thing caught on camera. Officers from Denver city, Texas, in hot pursuit, all the way into New Mexico. Chasing 35-year-old Amy Reina, wanted for probation violations, including burglary. But this morning, her family is suing police for the way the chase ended. The dash cam video that recorded every moment of last October's shoots, obtained by ABC's Lubbock affiliate. Her tires blown out, she comes to a stop. Officer Ryan Taylor draws his gun and shoots into the engine. Moments later, hees again -- Straight through the windshield, hitting Rayna. Her car rolling to a stand still. She was pronounced dead at the scene. And autopsy found methamphetamines in her system. Taylor told authorities she thought she had a gun. She is grabbing something. That's when I fired that last round. Reporter: But an investigation determined Rayna was not armed. And Taylor also told investigators he did not have a clear view into her car when he fired. He remains on the job. But could face charges in the future. The video of the shooting does not match the statement. If officer Taylor had a fear for his safety, he would have taken cover. Reporter: A lawyer for Taylor told ABC news, Ryan protected himself and the other officers in the situation and was not responsible for the events that occurred. Amy Reyna was. That's just kind of a snapshot of what was happening. So, in this case, you're really going to have to rely on what's on the videotape and what the other officers who were there, what they observed. Reporter: A high-speed chase that may have a very long, legal road ahead. For "Good morning America," Cecilia Vega, ABC news, los Angeles.

This transcript has been automatically generated and may not be 100% accurate.

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